Represents content to flow among various block region elements. The NamedFlow interface allows access to both the content of the flow and the series of regions in which it displays, and helps determine if the content exceeds or falls short of the number of regions necessary to display it.

The Region interface is available for any element that serves as a CSS region, whose flow-from CSS specifies it displays content from a named flow.

Usage

CSS Regions are defined by two CSS properties. The

flow-into property diverts content into a named flow, and the flow-from property pours that flow’s content through a dynamic chain of region elements. The feature allows content to follow a path through arbitrarily placed magazine-style layout elements. Use as follows:

The NamedFlow interface provides access to the content defined as flow-into, and the series of layout regions defined as flow-from. Use it to check if the amount of content matches the allotted set of regions in which it appears.

The Region interface provides information on each region within the chain, and allows access to fragments of content that dynamically appear there.